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经营范围
发明名称
Reinforced phonograph records
摘要
申请公布号
GB456121(A)
申请公布日期
1936.11.03
申请号
GB19360012981
申请日期
1936.05.08
申请人
HERMAN REFFELT;CHARLES CAGNON
发明人
分类号
G11B23/00
主分类号
G11B23/00
代理机构
代理人
主权项
地址
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